Bleaching is the only way you're going to get excellent color results.
But what will you have left? Frizzy fried hair that will be a royal pain in the you know where to grow out.
I recommend thinking about how much money you will have spent on the upkeep of wild hair and take that amount (I'm guessing a couple of hundred) and buy yourself the most amazing fun exciting wig you can find.
And wear it when the mood strikes or when you go out...
It'll be so much fun and the fact you can take it off when you want will be great too.